Apparatus for making carrier bags



Aug. 20, 1963 D. v. BONSOR APPARATUS FOR MAKING CARRIER BAGS 2Sheets-Sheet 1 Filed March 7, 1961 INVENTOR 0A v/o 14(7'01? BOA/30R Ela, I M

ATTORNEYS 1933 D. v. BONSOR 3,101,033

APPARATUS FOR MAKING CARRIER BAGS Filed March 7, 1961 2 Sheets-Sheet 2INVENTOR 9,4 W0 V/(TD/Q Bax/50 9 (LA/ I M ATTORNEYS United States Patent"ice 3,101,033 APPARATUS FOR MAKING CARRIER BAGS David V. Bonsor, LittleStocks, Aldhury, near Tring, England, assignor to Interstate BagCompany, Inc., Walden,

N.Y., a corporation of Virginia Filed Mar. 7, 1961, Ser. No. 116,900Claims priority, application Great Britain Mar. 7, 1960 7 Ciaims. (Cl.93-8) This invention relates to an apparatus for making carrier bags,particularly bags for shopping purposes of the kind having loopedhandles made from cord or other suitable material (hereinafter referredto as c0rd).

It is an object of this invention to provide an improved apparatus forthe continuous manufacture of handled carrier bags.

According to the invention, apparatus is provided for carrying out thefollowing operations: conveying a paper web destined to form the body ofthe bags, forming a handle comprised of a patch and U-shaped cord upon arevoluble drum, and causing the handle so tormed to be deposited uponthe traveling paper web at spaced intervals with the handle legs betweenthe web and the patch. It is a further feature of the invention toprovide handle leg straightening means operative to straighten the legsafter the handle has been secured to the patch and While both areattached to the rotating drum.

It is a still further feature that the axis of the drum is disposed atright angles to the longitudinal axis of the web whereby the cord andpatch assemblies are deposited successively in position along alongitudinal edge of the Web.

Other objects of the invention and the advantages thereof will beapparent as the description proceeds and the features of novelty will bepointed out in the appended claims.

A preferred embodiment of the invention is illustrated in theaccompanying drawing in which:

FIGURE 1 isa side elevation,

FIGURE 2 is a plan view of suitable apparatus,

FIGURE 3 shows the details of the handle-forming means, and

FIGURE 4 is a view taken on line 44 of FIGURE 2.

In the drawing a web of paper 1 with a folded hem 2 suitable for makinginto bags is fed from a reel, not shown, beneath a rotating cylinder (orcylinders) 3. Spaced in equal pairs around the cylinder and inaccordance with the desired spacing of the handles are four handleforming devices one of which is at 4 (it being understood that thenumber of such handle forming devices is not fixed but can be more orless than four). A patch-forming web of paper 5 is fed at right anglesto the bag-forming web 1. Patch-sized portions 6 are cut off web 5 bycutter 5a and conveyed on to a cylinder 7, by conventional conveyorelements as shown in FIGURES 2 and 4. This transfers each one on tocylinder 3 at a handle-forming position. The patches are held on thecylinders 7 and 3 by suction. Handle-forming cord 8 is fed by rollers 9between grooved guide and cutting rollers 10 and 11. Lengths of cord 12suitable for forming handles are cut off by the blades 13 and fed to thecylinder 3 also at a handle-forming position. Each handleforming device4 consists of a fixed former block 14 and a moving former 15 with cordgripping means 16 and patch-holding suction holes 17.

In FIG. 3 details of the handle-forming device are shown; the length ofcord 12 is fed into position against the fixed block 14. The originalposition of the cord is shown in dotted lines. Clamping rods 18 operateto grip the central portion of the cor-d and the moving former 15 bendsthe ends of the cord 12 at right angles to the cen- 3,lill,03-3 PatentedAug. 20, 1963 tral portion. The ends are then gripped between thegripping devices 16. Springs 19 return the clamps to their normalposition when the moving former 15 is withdrawn.

In operation the web of paper 1 is fed between two rollers 20 one ofwhich acts to apply adhesive to the web at suitable intervals. It thenproceeds between cylinder 3 and a pressing roller 21 Wherehandle-torming patches 6 are applied to the gummed portions of the web.The handle-holding patches 6 are cut from a web 5 adhesive beingpreviously applied as already stated to each patch on the parts wherethe ends of the handle cord will be placed, mechanism for doing thisbeing shown in FIG- URES 2 and 4, and consisting of glue applicator roll6a which is supplied with glue from the glue pan 6b. Then handle lengthsof cord 12 are cut ofif and both cord and patch supplied to the rotatingcylinder 3. The cord lengths are gripped by means 26 to hold them inposition as the cylinder rotates.

The timing is arranged so that one cord and one patch are applied toeach handle-forming device 4. The handleforming device is operated tobend the cord into the shape of a handle whereupon the two ends areplaced upon the parts of the patch coated with adhesive. The cylinder 3carries the patch with cord attached on round its circumference passinga consolidating roller 22 which presses the cord 12 on to the patch 6.'Fhcrcupon it passes to roller 21 where it meets the adhesive coatedpart of the bagmaking web 1. The spacing of the handle-forming deviceson the cylinder 3, its rate of rotation and the rate of movement of theweb 1 are arranged so that handles are applied in spaced apart pairs (i.e. one handle on each of the 2 main panels of each bag length). The webis later cut into its bag-lengths and the bags tformed by conventionalmeans.

After the handle lengths of cord 12, are cut off by the blades 13 andthe rollers 10 and 11, each length passes round a grooved roller 23 onto the cylinder 3. In order to hold the handle length in the groove asit passes round the holler 23, means such as a light chain passing roundtoothed wheels not shown, can be arranged to guide the cord.

Furthermore, in order to straighten the end portions of the bent cordand hold them in the correct positions before they reach theconsolidating roller 22 a moving chain 24 which carries two guide plates25 is provided adjacent to the cylinder 3 and set diagonally to thecylinder so as to contact and stroke out the said end portions of thecord. The guide plates 25 hold the end portions of the cord in position.The chain moves at such a speed that the guide plates hold the corduntil or just prior to reaching the consolidating roller 22 which thenconsolidate the handles thereunder.

The moving former 15 is caused to reciprocate to bend the cord lengthsround the fixed former 14 by any suitable means such as a lever operatedby a cam from which motion is transmitted through bevel gears to a rackand pinion.

As explained above, the handles may conveniently be formed by bendingthe lengths of cord into U-shaped' or D-shaped formations, and ifdesired, each pair of handles may be so arranged as to fit or nest onewithin the other by suitable adjustment of the size of each alternatehandle forming device. To assist in securing the ends of the cordhandles to the supporting or reinforcing patches and/or the bag walls,they may be flattened or spread to provide a greater area of adhesion.

After attachment of the handles to the bag Walls, the bag is completedby carrying out where appropriate the operation of severing the bagmaking material into individual bag sections, forming the bag sectionsinto tubes, adhesively securing the seam at one side of the bag andfinally carrying out the bag bottoming operation.

it will of course be appreciated that Whilst I have described thepreferred arrangement of apparatus for carrying out the method of myinvention 1 do not limit the scope of my invention in this respect. Forinstance the apparatus for forming the cord handles could quite wellcomprise a laterally moving anvil block adapted to operate against afixed fork shaped forming member.

Furthermore, when utilising two webs to form front and rear walls of thebags, two rotating drums fitted with V handle forming devices could beemployed, each said drum and apparatus for the manufacture of bagshaving con tinuous reinforcement around the open ends or mouth of thefinished bags, such reinforcement may Well be omitted.

Alternatively, edge reinforcement of the open ends or months of the bagsmay be provided after the handle assemblies have been attached to thebag making material, and for this purpose slits or slots are cut atintervals along the longitudinal edge of the said bag making material toprovide clearance for each .leg of the cord handles when the saidlongitudinal edge is folded over. The handle assemblies according tothis alternative arrangement may, if desired, be so placed that at leastpart of each handle reinforcing patch is situated beneath the edgereinforcement at the mouths of the bags.

Preferably the folded edge reinforcement is adhesively secured to thewalls of the bags.

I claim:

l. In an apparatus for making handled bags, means providing for atraveling paper web destined to form the body of the bags and upon whichhandles and securing patches are to be deposited and adhesively securedthereto at spaced intervals, a revoluble, handle forming drumoperstively disposed with respect to the traveling web, a patchreceiving station on said drum, means for feeding thereto cut patcheswhich may bear thereon glue for subsequent engagement with the handlelegs, and means for retaining them thereon, a handle cord receivingstation upon said drum axially removed from said patch receiving stationand operatively disposed with respect thereto, means for feeding cutlengths of cord to said cord receiving station and for retaining same inplace opposite said patch receiving station, a handle forming die onsaid drum, means for actuating same to form the cord'lengths intohandles with the legs of each handle projected over upon a patchwhereby, upon continued rotation of said drum, said handle and patch aredeposited as a unit upon said web with the handle legs between the weband the patch.

2. The apparatus according to claim 1 including a handle legstraightening device operative to straighten said legs after the handlehas been secured to the patch and while they are both attached to therotating drum.

3. The apparatus according to. claim 2 in which said device consists ofan endless chain having thereon cord engaging means movable along thehandle legs. 7

4. The apparatus according to claim 1 including a compacting rollefiective to press the handle legs upon said patches, the latter havingreceived spots of glue for securing said legs.

5. The apparatus according to claim 1 including means for cutting oifpatches from a continuous Web of patch material, and means for applyingglue patches thereto.

6. The apparatus according to claim .1 in which a plurality of sets ofpatch receiving stations and cord length receiving stations are disposedupon said roll, together with means for releasing the patch and cordassemblies upon contact thereof with said web.

'7. The apparatus according to claim 1 in which the axis of said'drurnis disposed normal to the longitudinal axis of the web whereby the cord'an patch assemblies are deposited successively in position along alongitudinal edge of the web.

References Cited in the file of this patent UNITED STATES PATENTS

1. IN AN APPARATUS FOR MAKING HANDLED BAGS, MEANS PROVIDING FOR ATRAVELING PAPER WEB DESTINED TO FORM THE BODY OF THE BAGS AND UPON WHICHHANDLES AND SECURING PATCHES ARE TO BE DEPOSITED AND ADHESIVELY SECUREDTHERETO AT SPACED INTERVALS, A REVOLUBLE, HANDLE FORMING DRUMOPERATIVELY DISPOSED WITH RESPECT TO THE TRAVELING WEB, A PATCHRECEIVING STATION ON SAID DRUM, MEANS FOR FEEDING THERETO CUT PATCHESWHICH MAY BEAR THEREON GLUE FOR SUBSEQUENT ENGAGEMENT WITH THE HANDLELEGS, AND MEANS FOR RETAINING THEM THEREON, A HANDLE CORD RECEIVINGSTATION UPON SAID DRUM AXIALLY REMOVED FROM SAID PATCH RECEIVING STATIONAND OPERATIVELY DISPOSED WITH RESPECT THERETO, MEANS FOR FEEDING CUTLENGTHS OF CORD TO SAID CORD RECEIVING STATION AND FOR RETAINING SAME INPLACE OPPOSITE SAID PATCH RECEIVING STATION, A HANDLE FORMING DIE ONSAID DRUM, MEANS FOR ACTUATING SAME TO FORM THE CORD LENGTHS INTOHANDLES WITH THE LEGS OF EACH HANDLE PROJECTED OVER UPON A PATCHWHEREBY, UPON CONTINUED ROTATION OF SAID DRUM, SAID HANDLE AND PATCH AREDEPOSITED AS A UNIT UPON SAID WEB WITH THE HANDLE LEGS BETWEEN THE WEBAND THE PATCH.